No kids, and we prefer to travel in shoulder season when it's less crowded and there are fewer kids around. We're still doing fine trading weeks.
Our last trip was Lake Tahoe in October: 1 week in a 2BR at Timber Lodge followed immediate by a week at Hyatt Northstar in a 2BR. Our next is a 3BR at Marriott Grand Chateau at the beginning of March. Those were all trades with our Marriott DSV2 White (Gold) season week deposits, and all were trades into a larger unit than the deposited week.
We always lock off and deposit to Interval, getting 2 weeks of vacation for 1 week of ownership.